package speedchina.controller.user;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang3.StringUtils;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import speedchina.controller.BaseController;
import speedchina.util.ServletUtils;
import speedchina.vo.ResultVO;


/**
 * 登录验证
 *
 * @author
 */
@Controller
public class LoginController extends BaseController
{
    /**
     * 登录页
     *
     * @param request  请求
     * @param response 响应
     * @return 登录页
     */
    @GetMapping("/login")
    public String login(HttpServletRequest request, HttpServletResponse response)
    {
        // 如果是Ajax请求，返回Json字符串。
        if (ServletUtils.isAjaxRequest(request))
        {
            return ServletUtils.renderString(response,
                "{\"code\":\"1\",\"msg\":\"未登录或登录超时。请重新登录\"}");
        }

        return "login";
    }

    /**
     * 表单登录
     *
     * @param username   用户名
     * @param password   密码
     * @param rememberMe 是否记住我
     * @return 统一结果
     */
    @PostMapping("/login")
    @ResponseBody
    public ResultVO ajaxLogin(String username, String password, Boolean rememberMe)
    {
        UsernamePasswordToken token = new UsernamePasswordToken(username, password, rememberMe);
        Subject subject = SecurityUtils.getSubject();
        try
        {
            subject.login(token);
        }
        catch (AuthenticationException e)
        {
            String msg = "用户或密码错误";
            if (StringUtils.isNotEmpty(e.getMessage()))
            {
                msg = e.getMessage();
            }
            return ResultVO.error(500, msg);
        }

        return ResultVO.success();
    }

    /**
     * 没权限或没登录返回页
     *
     * @param request  请求
     * @param response 响应
     * @return 没权限或没登录返回页
     */
    @GetMapping("/unauth")
    public String unauth(HttpServletRequest request, HttpServletResponse response)
    {

        // 如果是Ajax请求，返回Json字符串。
        if (ServletUtils.isAjaxRequest(request))
        {
            return ServletUtils.renderString(response,
                "{\"code\":\"1\",\"msg\":\"没有该访问权限，请联系管理员\"}");
        }
        return "/error/unauth";
    }
}
